Convert Eastern Time (EST) to Atlantic Time (AST). AST is 1 hour ahead of EST all year. Updated for the 2026 time zone changes and current daylight saving rules.
Need a city instead? Use the time zone converter.
| EST | AST |
|---|---|
| 12:00 AM | 1:00 AM |
| 1:00 AM | 2:00 AM |
| 2:00 AM | 3:00 AM |
| 3:00 AM | 4:00 AM |
| 4:00 AM | 5:00 AM |
| 5:00 AM | 6:00 AM |
| 6:00 AM | 7:00 AM |
| 7:00 AM | 8:00 AM |
| 8:00 AM | 9:00 AM |
| 9:00 AM | 10:00 AM |
| 10:00 AM | 11:00 AM |
| 11:00 AM | 12:00 PM |
| 12:00 PM | 1:00 PM |
| 1:00 PM | 2:00 PM |
| 2:00 PM | 3:00 PM |
| 3:00 PM | 4:00 PM |
| 4:00 PM | 5:00 PM |
| 5:00 PM | 6:00 PM |
| 6:00 PM | 7:00 PM |
| 7:00 PM | 8:00 PM |
| 8:00 PM | 9:00 PM |
| 9:00 PM | 10:00 PM |
| 10:00 PM | 11:00 PM |
| 11:00 PM | 12:00 AM (next day) |
This uses Eastern Time as in New York and Toronto. Since Nov 1, 2026, Manitoba (UTC−5 all year) is on the same time as EST from November to March, and Atikokan, Ontario stays on EST all year.
This uses Atlantic Time as in Halifax. Puerto Rico and Quebec’s Lower North Shore stay on AST all year.
AST is 1 hour ahead of EST all year.
9:00 AM EST is 10:00 AM AST.
12:00 PM EST is 1:00 PM AST.
5:00 PM EST is 6:00 PM AST.
EST is often used loosely for Eastern Time all year. Strictly, EST is the winter time and EDT is the summer time, from the second Sunday in March to the first Sunday in November. The converter above shows the right one for the date you pick.
This uses Eastern Time as in New York and Toronto. Since Nov 1, 2026, Manitoba (UTC−5 all year) is on the same time as EST from November to March, and Atikokan, Ontario stays on EST all year.
This uses Atlantic Time as in Halifax. Puerto Rico and Quebec’s Lower North Shore stay on AST all year.